linux-kernel - Re: [PATCH 2/2] dma: of: Remove check on always true condition

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Date:	Mon, 22 Apr 2013 14:38:29 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	"Lars-Peter Clausen" <lars@...afoo.de>
Cc:	Vinod Koul <vinod.koul@...el.com>, Jon Hunter <jon-hunter@...com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] dma: of: Remove check on always true condition

On Monday 22 April 2013, Lars-Peter Clausen wrote:
> Both of_dma_nbcells field of the of_dma_controller and the args_count field of
> the dma_spec are initialized by parsing the #dma-cells attribute of their device
> tree node. So if the device tree nodes of a DMA controller and the dma_spec
> match this means that of_dma_nbcells and args_count will also match. So the
> second test in the of_dma_find_controller loop is redundant because given the
> first test yields true the second test will also yield true. So we can safely
> remove the test whether of_dma_nbcells matches args_count. Since this was the
> last user of the of_dma_nbcells field we can remove it altogether.
> 
> Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
> ---

Acked-by: Arnd Bergmann <arnd@...db.de>
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